Data Organization and Format

The October 23, 2011, 10:41 UTC, Mw 7.2, Van, Turkey Earthquake data recorded by the USGS are available via the NSMP ftp server in the folder (directory) "20111023_1041" (https://ca.water.usgs.gov/nsmp/20111023_1041).    The time series provided are available in uncorrected acceleration, corrected acceleration, corrected velocity, corrected displacement, response spectra (relative displacement, relative velocity, pseudo-velocity, and absolute acceleration), and Fourier amplitude spectra of corrected acceleration.  All of the data are in SMC format.  

USGS IRIS data for this event use the following file-naming convention:

N = Network Code
S = Station code
C = SEED channel
L = Location code

The data are stored in two directories: uncorrected (only uncorrected acceleration) and corrected (all of the corrected and processed data, including acceleration, velocity, displacement, response spectra and Fourier amplitude spectra. This convention for organizing the data was implemented to avoid confusion between the directory names (Vol1, Vol2, … Vol6) previously used for some earlier events and the standard conventions for Volume1, Volume2 and Volume 3 processing.

Information on how the data are processed can be found in the section on DATA PROCESSING.  Note that these data were processed using an acausal Butterworth locut filter.

Downloads

Tables

List of corrected peak ground accelerations and velocities and pseudo-spectral accelerations for available time-series data, (to obtain list as Excel spreadsheet click here ; click cancel button if get pop-up window requesting user name and password)